INFORMATION & REQUIREMENTS ELECTRIC SERVICE - NStar
INFORMATION & REQUIREMENTS ELECTRIC SERVICE - NStar
INFORMATION & REQUIREMENTS ELECTRIC SERVICE - NStar
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APPENDIX A - SKETCHES INDEX<br />
1. Standby Generator Installation Schematic Connection Diagrams<br />
2. Typical Overhead Service Entrance Facilities<br />
3. Minimum Vertical Service Clearance Above Ground and<br />
Buildings<br />
4. Service Mast Construction at Low Buildings – 400 Amperes or<br />
Less Single Phase Maximum<br />
5. Overhead Service Installation of Service Bolt<br />
6A. Typical Residential Underground Service from Overhead<br />
Facilities on Same Side of Street<br />
6B. Typical Residential Underground Service from Overhead<br />
Facilities on Opposite Side of Street<br />
7. Typical Installation of Underground Service to a Single Building<br />
400 Amperes or Less Fed From Overhead to Underground<br />
Only<br />
8. Typical Installation of Underground Service To A Single Building<br />
400 Amperes Or Less Fed From A Manhole System<br />
9. 800-1000 Ampere Special Terminal Box<br />
10. Required Clearances Around NSTAR Owned Facilities<br />
11. Padmounted Transformer Protection From Vehicular Traffic<br />
12. Temporary Service Structure for Service 200 Amperes or Less<br />
13. Minimum Clearances For All Self-Contained Meter Socket<br />
Installations<br />
14. Residential or Small Commercial Meter Pedestal Installation For<br />
120/240 Volt, 400 Amperes or Less Service<br />
15. Hot and Cold Sequence Diagrams<br />
104<br />
APPENDIX A - SKETCHES INDEX<br />
16. NSTAR Meter Socket/Connection Requirements<br />
17. Meter Installation for 200 Amperes, Single Socket, Single<br />
Phase, 3 Wire, 120/240 or 120/208 Volt Service With 4 or 5<br />
Terminal Meter Socket<br />
18. Meter Installation for 200 Amperes, Multiple Sockets, Single<br />
Phase, 3 Wire, 120/240 or 120/208 Volt Services With 4 or 5<br />
Terminal Meter Sockets<br />
19. Meter Installation for 200 Amperes,Three Phase, 3 Wire, 240<br />
or 480 Volt Service With 5 Terminal Meter Socket and Bypass<br />
20. Meter Installation for 200 Amperes,Three Phase, 4 Wire,<br />
120/208 or 277/480 Volt Service With 7 Terminal Meter<br />
Socket and Bypass<br />
21. Meter Installation for 400 Amperes, Single Phase, 3 Wire,<br />
120/240 or 120/208 Volts With 5 Terminal Meter Socket and<br />
Bypass<br />
22. Meter Installation for 400 Amperes, 3 Phase, 4 Wire, 120/208 or<br />
277/480 Volt Service With 7 Terminal Meter Socket and Bypass<br />
23. Typical Meter Installation Involving Current Transformers One<br />
or More Cable Per Phase Each Cable No Larger Than 500 KCMIL<br />
24. Transformer Rated Meter Installations With Meter Cabinet<br />
Located Outdoors<br />
25. Mounting Provisions and Dimensions For Metering Current<br />
Transformers In Service Cubicles Rated 600 Volts,<br />
1800 Amperes or Less<br />
26. Mounting Provisions and Dimensions For Metering Current<br />
Transformers In Service Cubicles Rated 600 Volts, 2000 –<br />
6000 Amperes<br />
105
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